Any Key action set is not working for Rich text Editor control

I have a requirement where user wants to see the reduction in character count while entering text in Rich Text Editor .

This should happen during the progress of entering text in Rich Text Editor , not after user enters text in RTE and move out of the field .

I am achieving this by setting property value for remaining count on refreshing section and displaying it but Any key event is not working for RTE control

Please suggest some work around for this requirement.

@jyotiram - Better to use custom control for your requirement. You can easily achieve this with java script. “oninput” tag will work for you.